<footer class="footer_bd main">
   <nav class="nav_menu">
      <ul class="nav_ul">
        <li><a class="nava1 <?php if($tab ==1) echo "nava";?>" href="/zhs_mobile/borrow.html" target = "_self"></a></li>
        <li><a class="nava2 <?php if($tab ==2) echo "nava_1";?>" href="/zhs_mobile/ucenter.html" target = "_self"></a></li>
        <li><a class="nava3 <?php if($tab ==3) echo "nava_2";?>" href="/zhs_mobile/notices.html" target = "_self"></a></li>
        <li><a class="nava4 <?php if($tab ==4) echo "nava_3";?>" href="/zhs_mobile/notices/aboutus.html" target = "_self"></a></li>
      </ul>
   </nav>
</footer>
</body>
</html>
